2 piece adjustable support beams.
4 are 2.5 inches in diameter and max length 86 inches. 1 support missing plate.
4 are 2.750 inches diameter and max length 93 inches.
All 8 only used for 1 job.
Bought all 8 at Home Depot. All 8 would have average price of 90$ each.
$300 OBO